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Ignition check
Propeller
governor
4.6) Take-off
Climb
4.7) Cruising
Performance
Effectivity: 912 Series
Rev. 1
Step
Procedure
1
Full throttle ground test (consult Aircraft Operators Man-
ual (OM) since engine speed depends on the propeller
used).
After engine warm – up and prior to take –off, check the two
ignition circuits at 4000 rpm (approx. 1700 rpm propeller).
Step
Procedure
1
Speed (engine rpm) drop with only one ignition circuit
must not exceed 500 rpm (approx. 210 rpm propeller).
2
150 rpm (approx. 65 rpm propeller) max. difference of
speed (engine rpm) by use of either circuit, A or B.
NOTE
The propeller speed depends on the actual reduction ratio.
Check of hydraulic propeller governor:
Check control of the hydraulic propeller governor to specifica-
tions of the manufacturer.
NOTE
Cycling the propeller governor puts a relatively high load on the
engine. Unnecessary cycling or additional checks should be
avoided.
Non-compliance can result in serious injuries or death!
Monitor Operating limits. Limits must not be exceeded.
Climbing with engine running at take-off performance is permis-
sible (max. 5 minutes).
See
Chapter 2.1 Operating limits
Step
Procedure
1
Set performance as per performance specifications
Chapter 5
2.1 Operating
BRP-Rotax
m WARNING
and respect operating limits as per
limits.
Ed.4/January 01 2023
Chapter
Page 4-9
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